IN74ACT20
DUAL 4-INPUT NAND GATE
High-Speed Silicon-Gate CMOS
The IN74ACT20 is identical in pinout to the LS/ALS20,
HC/HCT20. The IN74ACT20 may be used as a level converter for
interfacing TTL or NMOS outputs to High Speed CMOS inputs.
• TTL/NMOS Compatible Input Levels
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 4.5 to 5.5 V
• Low Input Current: 1.0 µA; 0.1 µA @ 25°C
• Outputs Source/Sink 24 mA
ORDERING INFORMATION
IN74ACT20N Plastic
IN74ACT20D SOIC
TA = -40° to 85° C for all
packages
PIN ASSIGNMENT
LOGIC DIAGRAM
NC = NO CONNECTION
FUNCTION TABLE
Inputs
Outpu
t
PIN 14 =VCC
A
L
X
X
X
H
B
C
X
X
L
D
X
X
X
L
Y
H
H
H
H
L
PIN 7 = GND
X
L
PINS 3,11 = NO CONNECTION
X
X
H
X
H
H
X = don’t care
1
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